Neerslag — 2023
| Month | Hoeilaart | La Hulpe | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 128.5 mm | 117.1 mm | +11.4 |
| Apr | 80.7 mm | 76.6 mm | +4.1 |
| May | 65.7 mm | 64.4 mm | +1.3 |
| Jun | 42.1 mm | 35.7 mm | +6.4 |
| Jul | 101.3 mm | 111.2 mm | -9.9 |
| Aug |
| 79.7 mm |
| 80.8 mm |
| -1.1 |
| Sep | 77.4 mm | 76.2 mm | +1.2 |
| Oct | 120.6 mm | 123 mm | -2.4 |
| Nov | 116.8 mm | 121.2 mm | -4.4 |
| Dec | 79.1 mm | 84.2 mm | -5.1 |